Overhead property supply clearance requirements

[cloudy]

Hi, we have a single phase overhead supply to our property, and are constructing a garage with a corner near the center of the ~15m span. What is the minimum separation to the structure? Is it possible to secure the cable at the midway point on the new structure?

Thanks!

 

[ashrow]

The best thing you should do is contact the company that maintains the over head cables
If they are bare conductors they may need to provide an insulation/cover to these prior to you commencing the works (this should be free)

 

[cloudy]

The cable is fully insulated if that helps...

 

[Carl S]

The cable is fully insulated if that helps...

Depending on the age of the supply it could be paper insulated with red lead jute binding or hard drawn VIR, both by now will be knackered and dangerous. I wouldn’t touch ether with a barge pole.

Get in touch with your DNO.

 

[westward10]

Who owns or has responsibility for the cable.

 

[snowhead]

Does this cable only supply your property or does it go on to supply another one?

You need to speak to the D.N.O / cable owner, they will assess whether they need to fit extra protection or even divert the cable before work starts.
And then to advise what further work is required.

I would speak to them immediately as I wouldn't be surprised if they have the legal right to stop you working adjacent to it.

 

[westward10]

Needs to contact UKPN.

 

[cloudy]

OK thanks, will have to contact ukpn

 

[driverman]

Re DNO requirements: When workmen on a roof, they must not be able to touch the O/H cables. I think the guide line is, plus 1 meter further than average persons out stretched arm.
There are other issues also. DNO guy will discuss with you. Are the existing O/H cables old ?
If so DNO may alter / replace FOC
Do they feed other properties ie neighbour?
Would it be possible to go underground? You dig reinstate trench, DNO do the electrical connections, to keep any costs down.

 

[Megawatt]

Re DNO requirements: When workmen on a roof, they must not be able to touch the O/H cables. I think the guide line is, plus 1 meter further than average persons out stretched arm.
There are other issues also. DNO guy will discuss with you. Are the existing O/H cables old ?
If so DNO may alter / replace FOC
Do they feed other properties ie neighbour?
Would it be possible to go underground? You dig reinstate trench, DNO do the electrical connections, to keep any costs down.

Driver man the guideline is 28 meters

 

[Robson689]

Driver man the guideline is 28 meters

28 meters that's a considerable distance!! The explanation by driverman sounds more likely

 

[DPG]

Driver man the guideline is 28 meters

In the UK?

 

[davesparks]

Driver man the guideline is 28 meters

28 metres from what to what?

 

[Megawatt]

28 metres from what to what?

I did my math wrong it’s 8 feet clearance on top of a roof for the power cable

 

[westward10]

I did my math wrong it’s 8 feet clearance on top of a roof for the power cable

Where the UK or the US.

 

[davesparks]

I did my math wrong it’s 8 feet clearance on top of a roof for the power cable

Ah, 2.8metres makes more sense, although I think it can be a bit closer in the uk

 

[Megawatt]

I did my math wrong it’s 8 feet clearance on top of a roof for the power cable

I got in trouble for that if it affected you I’m sorry

 

[driverman]

Advice about working near overhead power lines| UK Power Networks - https://www.ukpowernetworks.co.uk/safety/around-power-lines/i-need-advice-about-working-near-overhead-power-lines . This may help, if not already done

 

[Megawatt]

Advice about working near overhead power lines| UK Power Networks - https://www.ukpowernetworks.co.uk/safety/around-power-lines/i-need-advice-about-working-near-overhead-power-lines . This may help, if not already done

Driverman I was try to tell you 8 foot clearance but be like y’all and do it in meters and I can tell you I must have layed out of school that day because I don’t know the metric system and I don’t know y’alls clearances hell if I could go a day without Dave getting mad at me I wouldn’t know what to do anyway the clearances in the USA 8 feet

 

[driverman]

Driverman I was try to tell you 8 foot clearance but be like y’all and do it in meters and I can tell you I must have layed out of school that day because I don’t know the metric system and I don’t know y’alls clearances hell if I could go a day without Dave getting mad at me I wouldn’t know what to do anyway the clearances in the USA 8 feet

Hey, no worries

 

[Carl S]

Your local PoCo and AHJ will give guidance on this matter.

If the AHJ inspector “red tags” the install you’re in for a rough ride.

This side of the pond we would refer to it as an improvement order. I’ve only seen one instance of an improvement order being issued, it wasn’t pleasant.

Remember, BS7671 is a code of practice, NFPA-NEC is statute law.

 

[Megawatt]

Your local PoCo and AHJ will give guidance on this matter.

If the AHJ inspector “red tags” the install you’re in for a rough ride.

This side of the pond we would refer to it as an improvement order. I’ve only seen one instance of an improvement order being issued, it wasn’t pleasant.

Remember, BS7671 is a code of practice, NFPA-NEC is statute law.

Carl that is so right in the USA, I just found out yesterday that an electrical company had done a job and still didn’t get the problem fixed so they called me and I found the problem in 15 minutes and it was an earthing problem. It burnt up there TV, refrigerator, microwave etc. they didn’t even draw a permit and changed a panel that wasn’t the problem and charged them $ 1100.00. I told the customer to call code enforcement and turn them in. Got a call from the customer yesterday and told me they found him guilty, fined him $ 1000 and suspended their license for 1 year. In America they don’t play if you don’t follow their guidelines and rules.

 

[Carl S]

For those who don’t know, AHJ = Authority Having Jurisdiction = building control with teeth. Something we should have on this side of the pond. A red tag means the installation can’t be made live.

 

[DPG]

Carl S, are you in the USA? Your flag shows as UK.

 

[Carl S]

UK, but I cover Indian regs as well

 

[DPG]

UK, but I cover Indian regs as well

I'm even more confused now.

 

[PEG]

....He must be carbon-offsetting our cowboys

 

[Dan]

Steady on lads.
[automerge]1568121012[/automerge]

Carl that is so right in the USA, I just found out yesterday that an electrical company had done a job and still didn’t get the problem fixed so they called me and I found the problem in 15 minutes and it was an earthing problem. It burnt up there TV, refrigerator, microwave etc. they didn’t even draw a permit and changed a panel that wasn’t the problem and charged them $ 1100.00. I told the customer to call code enforcement and turn them in. Got a call from the customer yesterday and told me they found him guilty, fined him $ 1000 and suspended their license for 1 year. In America they don’t play if you don’t follow their guidelines and rules.

Did they get their money back too or not?

 

[Megawatt]

Steady on lads.
[automerge]1568121012[/automerge]

Did they get their money back too or not?

Dan no they didn’t get their Money back because the lady of the house canceled the check before they had a chance to cash it. I kind of felt bad about that company loosing their license for a year but follow the guidelines set by the NEC and NFPA and you will stay out of trouble.

 

[telectrix]

Driverman I was try to tell you 8 foot clearance but be like y’all and do it in meters and I can tell you I must have layed out of school that day because I don’t know the metric system and I don’t know y’alls clearances hell if I could go a day without Dave getting mad at me I wouldn’t know what to do anyway the clearances in the USA 8 feet

we all think in feet and inches but have to work in metres/millimeters, (except the under 30's who don't know any better). it's better for you as everyone there uses feet and inches.